i've a very simple (and stupid may be) question. i'm designing a simple amplifier and i need to match the input and output to 50 ohms. my question is how can i find out the impedance looking into the gate/gate-source of the transistor so i can design an appropriate matching network. i did SP analysis and plotted ZM1 but that gave me an odd result so I was wondering if i'm doig something wrong. should Z11 and ZM1 give the same result? I also need to find out the impedance looking into the drain for output match and I did ZM2 and again result was odd. Also, what if i want to check impedance looking into any node; is there a cadence way of doing it or you've to do voltage source and then calculate R=V/I but that would just give me resistance; what about reactance? thanks